how much did the cost of steel go up (in real dollars) since last year?

(edit- I mean in percentage points)

Canadian (in construction industry) here: my boss is giving me shit for having gone over budget and it turns out that steel prices may be largely the reason why. I know prices went up but have no idea how much. Can someone tell me?

Also, related question: As a Canadian, how much trump tariffs increase rise in percentage price of steel?